Gage-glass.



J. G. ,TALMAGE.

GAGE-GLASS.

APPLICATION FILED OCT. 15. 1913.

1,142,540. Patntedlunefl, 1 15.

THE NORRIS PETERS 50., PHOTO-LITHOV. WASHINGTON, D. C.

' JOHN G. TALMAGE, 0F CLEVELAND, OHIO.

GAGE-GLASS.

Application filed October 15, 1913.

. served. Such gage glasses have the advantage of greater strength andless liability to breakage than the standard glass tube.

One of the objects of my invention is to simplify and cheapen theconstruction and to render the gage more efficient in service, reducingto a minimum the danger of breakage of any roundels, or the leakagethereat,

and eliminating the chance of sediment obscuring the observation.

Another object is to so arrange the roundels that the water level isalways visible through some roundel, thus increasing the accuracy ofobservation. Still another object of the invention is to provide for theeasy removal of the roundels for cleaning or replacing them, orreplacing their gaskets.

My invention is hereinafter more fully described in connection with apreferred embodiment thereof, as shown in the accompanying drawing. V I

In the drawing, Figure 1 is a side elevation of my gage glass mountedbetweenthe usual fittings; Fig. 2 is a vertical central section of thegage glass proper in a plane parallel with Fig. 1, as indicated by thesection line 2-2 on Fig. 3; Fig. 3 is a side elevation of the gage glassproper, partly broken away and sectioned; Fig. 4 is a cross section onoffset planespassing through the centers of adjacent roundels, asindicated by the line 41 on Fig. 1.

As shown in each figure, 10 indicates the casing or body of the gagecomprising a Specification of Letters Patent.

Patented June 8, 1915.

Serial No. 795,269.

rectangular member of the form shown, having a central verticalrectangular cavityll, and nlpples 12 and 13 at theopposite ends, thebores of which are internally threaded,

and communicate with the cavity 11. A and B, in Fig. 1, indicate theusual shut off valves connected with the boiler shell C, and having theusual connections D and E with the nipples 12 and 13, as is wellunderstood.

Specifically describing the casing 10, it

will be seen that it is a single integral member, which may convenientlybe a casting. It has vertical parallel edge walls 20, preferably roundedat their tops and bottoms to merge into the top wall 21 carrying thenip-V.

ple 12 and the bottom wall 22 carrying the nipple 13.

Connecting the edge walls'described are parallel sides having outervertical faces 2d and inner vertical faces 26. These sides arepreferably braced intermediately by cross pieces or stay bolts 25.Through the respective side walls are substantially cylindrical recesses28 and 29 located comparatively close together and thus leaving betweenthem portions 27 of the sides, which maybe designated webs. The recesses28 onone side of the central plane are in alinement with thecorresponding recesses 29 on the other side. 1

Adjacentto the outer end of the recesses 29 are inwardly projectingannular flanges 30, which form openings 31 of less diameter than therecesses. Accordingly, the series of cylindrical openings are obtained,leading smaller cylindrical portions there are preferably slightfillets, as shown in Figs. 3 and 4.

40, in Figs. 3 and 4, indicate gaskets which surround the smallercylindrical portions of the roundels, respectively. As two roundels areemployed in each of the two alined recesses 28 and 29, there are four ofthese gaskets in such recesses. The outermost gasket in the recess 29rests against the flange 30. The outermost gasket on the opposite sideis compressed by a thimble 42 screw threaded into the outer portion ofthe recess 28. The intermediate gaskets bear against and are separatedby a distance sleeve 44, which has openings 45 through its wall. Aninspection of Figs. 3 and 4, together with the above description, showsthat the two alined roundels, together with their gaskets and holdingparts, may be put in place through the open end of the recess 28 andclamped tightly in place by screwing in the thimble 42 compressing thefour gaskets against their respective bearing surfaces. The portions 35and 86 of the roundels having a diameter smaller than the interiordiameter of the thimble 42, or the distance sleeve 44, or the opening31, and, accordingly, the glass does not bear directly on the metal, butis clamped at all points against the elastic gaskets. This elasticclamping insures long life of the glass. If, however, any roundelbecomes broken, or it is desired to remove any of them for replacing thegaskets or cleaning, it is only necessary to screw out the thimble 42(spanner notches 47 being provided for this purpose), and then shove outfrom the opposite side the alined roundels, distance sleeve and gaskets.The stay bolts or cross bars 25 act to prevent any of the gasketsdropping down into the intermediate space should they become separatedfrom the roundels in this replacement. As shown in the drawings, theroundels are placed in four vertical tiers, two tiers on each side ofthe casing directly opposite each other. The roundels in adjacent tierson either side are staggered, so that a roundel of one tier extendshigher or lower than the adjacent roundel of the adjacent tier. Thisoverlapping necessitates the water level be ing visible through someroundel if the water is in the casing at all. The result is that ascontinuous and accurate an observation may be made of the water level asif a single glass tube were employed. 1

My gage is very simple and cheap to construct. The body may be simplycast as one integral piece and the seats for the gaskets bored out, andthe threads turned for the thimbles. This, with the threading of thenipples, is all the machine work that need be done on the casing. Theplacing of the roundels, the gaskets, and the thimbles is, of

course, a very simple matter. In the case of leakage, it is onlynecessary to tighten the corresponding thimble.

It should be noted that there is no chance for sediment in the water toobscure the vision, the openings 45 in the distance sleeves allowing anysuch sediment to drop to the bottom of the casing.

Having thus described my invention, what I claim is:

1. In a gage glass device, the combination with a pair of transparentmembers, of a casing having an internal space for liquid and spaces onopposite sides of the liquid space for the transparent members, thelatter spaces being uninterrupted intermediately and one of themuninterrupted eXternally whereby both transparent members may be put inplace from one side without disturbing the casing, and means forclamping said member in place from one side.

2. The combination of a casing having an internal space for liquid andhaving a series of individual alined openings through the opposite wallsof the casing, transparent members in the openings, means for clampingthem in place, and space bars within the intermediate space bracing thewalls and preventing the transparent members being dropped into suchspace while such members are being removed.

3. In a gage glass construction, the combination of a casing having aninternal space for liquid and alined openings through the opposite wallsof the casing, said openings being uninterrupted intermediately and oneof them uninterrupted externally, transparent members in the openings,gaskets therefor, and devices acting on the gaskets and adapted tocompress the gaskets in both walls from the same side of the casing.

4. In a gage glass construction, the combination of a casing having aninternal space for liquid, alined openings through the walls of thecasing, an internal annular flange adjacent to the outside of one of theopenings, a thimble screwing into the outer portion of the oppositeopening, roundels on opposite sides of the liquid space between saidflange and thimble, and distance pieces between the opposed roundels.

5. In a gage glass construction, the combination of a casing having aninternal space for liquid, alined openings through the walls of thecasing, and an internal annular flange adjacent to the outside of one ofthe openings, a thimble screwing into the outer portion of the oppositeopening, roundels on opposite sides of the liquid space between saidflange and thimble, and a distance member between the two roundels.

6. In a gage glass construction, the combination of a casing having aninternal space for liquid, alined openings through the walls of thecasing, and an internal annular flange adjacent to the outside of one ofthe openings, a thimble screwing into the outer portion of the oppositeopening, roundels on opposite sides of the liquid space between saidflange and thimble, a distance sleeve between the two roundels having anopening through its wall, and gaskets between such sleeve and therespective roundels. 7 1

7. In a gage glass construction, the combination ofa casing having aninternal space for liquid, alined openings through the walls of thecasing, and an internal annular flange adjacent to the outside of one ofthe openings, a thimble screwing into the outer portion of the oppositeopening, roundels on opposite sides of the liquid space between saidflange and thimble, a distance sleeve between the two roundels, and fourannular gaskets located respectively between one roundel and the flange,between said roundel and the distance sleeve, between the distancesleeve and the other roundel, between the last mentioned roundel and thethimble, all of the gaskets, roundels and the distance sleeve beingremovable through the opening normally occupied by the thimble.

8. The combination of a casing having an internal liquid space, throughthe wall of the casing on opposite sides of the liquid space, saidopenings being cylindrical, one of the openings having an internalflange adjacent to its outer end, and the other opening having aninternal thread adjacent to its outer end, two roundels occupying therespective openings, each having an intermediate enlarged portion andtwo extreme reduced portions, gaskets surrounding the four reducedportions of the two roundels, a distance sleeve between the twointermediate gaskets, and a thimble engaging the screw thread mentioned.

9. In a gage glass construction, the combination of a casing made of asingle integral casting and having edge walls and side walls, the sidewalls having their inner faces spaced apart to provide a water space butconnected and braced by cross members, nipples at the upper and lowerends of the casing having bores communieat ng with the water space,there being cylindrical openings arranged in each of the walls, theopenings in one wall being opposite the corresponding openings in theother wall, roundels occupying the respective alined openingsv roundingthe extreme portions, and thimbles compressing the rings,

bination of a casing having an internal space a I 10. Ina gage glassconstruction, the comfor liquid and having openings opposite T eachother through the walls of the easing, one of the openings having anunrestricted outside entrance, transparent members adapted to'be put inplace in said openings from one side through the last-specified aninwardly extending shoulder adjacent to the outside of one of theopenings, the other opening having an unrestricted entrance, a

pair of transparent members and an intermediate distance piece adaptedto be put in place through the opening opposite the shoulder, and meansfor clamping the trans parent members and distance piece in place, theshoulder receiving the thrust of such clamping action.

12. In a gage glass construction, the combination of a casing having aninternal space for liquid, there being opposite openings through thewalls of the casing, a pair of transparent members adapted tosubstantially fill said. openings, one of saidopenings having anunrestricted entrance to allow the insertion therethrough of bothmembers, means for maintaining said mem- I bers separated, and means forclamping them in place. V

13. In a gage glass construction,-the combinationof a casing having aninternal space for liquid and opposite openings through its walls, aninwardly projecting shoulder adjacent to the outer side of one of theopenings, the corresyonding side of the other opening beingunrestricted, a pair of transparent members adaptedto be inserted intosuch openings through the opening having the unrestricted outerentrance, means for maintaining the transparent members separated, andmeans for clamping both of them in place from one side.

14. In a gage glass construction, the combinationof a casing having aninternal space for liquid and having opposite openings through the wallsof the casing, a pair of transparent members adapted to be passedthrough one of the openings and seat in the respective openings, meansfor preventing said members passing out of the far opening, a thimblescrewing into the near opening, and means separating the transparentmembers While allowing liquid to stand between them, whereby saidthimble may clamp both members in place from one side.

15. The combination of a single integral casing having an internal spacefor liquid and spaces on opposite sides of the liquid space fortransparent members, said spaces being uninterrupted intermediately andone of them uninterrupted externally whereby both members may be put inplace from one side, there being a shoulder preventing the memberspassing out of the other side, means separating the members, and meansoperable from the side from which they are put in place to clamp them inplace.

In testimony whereof, I hereunto afiiX my signature in the presence oftwo witnesses.

JOHN G. TALMAGE.

Witnesses JUSTIN W. MACKLIN, J. B. HULL.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. O.

